A safety joint disclosed in this invention has a cover, a base to hold one of the covers and an elastic part to be placed between the cover and the base, wherein the elastic part has a sealing part to seal the gap between the cover and the base, in addition, the elastic part has a second neck corresponding to a pressing part of the cover, so that the safety joint can withstand higher back pressure And has better anti leakage effect.本創作揭露的一種安全接頭具有一蓋件、盛接該蓋件之一基座及容置於該蓋件及該基座之間的一彈性件，其中該彈性件具有一密封部密封該蓋件及該基座之間的縫隙，此外，該彈性件具有一第二頸部與該蓋件的一抵壓部相應配合，使該安全接頭能夠承受更高的回壓，並具有更佳的防滲漏效果。
